Best On-Premises Business VoIP Providers of 2025 - Page 2

Find and compare the best On-Premises Business VoIP providers in 2025

Use the comparison tool below to compare the top On-Premises Business VoIP providers on the market. You can filter results by user reviews, pricing, features, platform, region, support options, integrations, and more.

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    Yeastar K2 IP PBX Reviews
    Yeastar K2 IPPBX is available as both hardware and software. It supports 2000 users, 500 concurrent conversations, and 400 VoIP trunks across multiple locations. This gives medium and large enterprises full flexibility and capability. Yeastar K2IP PBX is designed to meet the communication needs of today and tomorrow. It offers enterprise-level features and exceptional reliability. It also allows remote working with next-level Linkus UC Softphone.
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    Horizon Hosted Phone System Reviews
    The Horizon hosted phone system is a comprehensive solution for business communication, offering a wide array of both fixed and mobile telephony functions through a user-friendly web interface. As the leading cloud telephony option available today, Horizon boasts an extensive feature set designed to cater to the needs of businesses of all sizes and structures. Cavendish has been a pioneer in providing the Horizon system, accumulating significant expertise in its setup, installation, training, and support for various phone system configurations that contemporary businesses demand. With the capability to implement auto attendant features, businesses can streamline call routing by presenting callers with menu options. Additionally, users can access their phone number and customize settings from any enabled device within the organization, enhancing flexibility and efficiency in communication. This adaptability makes Horizon an invaluable asset for modern companies aiming to optimize their telephony solutions.
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    ITC Cloud Reviews

    ITC Cloud

    In-Telecom

    $25 per month
    Our cloud phone systems come equipped with ITC Cloud, providing high-definition video conferencing along with chat and recording features, in addition to traditional VoIP services. This solution is ideal for maintaining connections with both clients and team members in virtual settings. Are you prepared to enhance your efficiency and collaboration?
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    Pulsar360 Reviews
    Customers can now seamlessly operate from any location thanks to a comprehensive mobility solution that includes essential features for critical operations. Our services allow you to reduce costs through integrated redundancy and the rapid setup of SIP trunks, DIDs, and toll-free numbers. Pulsar360 Corporation’s Voice over IP (VoIP) offerings ensure superior voice communication that can be utilized over cost-effective broadband connections, whether from other providers or through our own managed carrier services. By consolidating their communication needs into a single network connection for both phone and high-speed internet services, clients not only save money but also enhance their productivity. Having dedicated over a decade to refining our VoIP platform, we have developed one of the most advanced and highly automated systems available in North America. This significant progress enables us to provide immediate setup of SIP trunks, hosted and hybrid VoIP PBXs, local and international DIDs, toll-free numbers, and sophisticated management features. With such innovations, businesses can experience a transformation in how they communicate and operate on a daily basis.
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    VaxVoIP Reviews
    The VaxVoIP SIP Server SDK is a powerful development toolkit that enables building secure, scalable SIP-based VoIP solutions including IP-PBX, IVR systems, auto-dialers, smart agents, call centers, and calling card systems. Compatible with the SIP protocol, it supports various SIP devices such as softphones, hardphones, and ATA adapters, providing flexibility in hardware integration. The SDK offers a rich set of PBX functionalities like call queues, call forwarding, call recording, voicemail, and sophisticated call routing to create feature-rich telephony applications. Security is a priority, with protections against SIP floods, scanning attacks, and brute-force intrusions to safeguard communications. Developers can access audio PCM data in real time, facilitating the incorporation of AI, machine learning, and smart agents to deliver intelligent, automated interaction. This integration enables next-generation voice communication solutions with enhanced responsiveness and adaptability. VaxVoIP simplifies complex VoIP development challenges, offering a reliable, secure foundation. It’s an ideal choice for developers aiming to build modern, secure, and intelligent SIP-based communication systems.
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    Vocalcom Reviews
    AI-Powered Cloud Contact Center Solution. It powers innovative, personality-based routing. It also manages multichannel customer interactions in one conversation. Vocalcom is the world of digital engagement and artificial Intelligence (AI), where live agents are seamlessly integrated into the customer interaction flow. All customer interactions can be managed in one conversation. The new generation of cloud contact centre platform that integrates with existing systems and supports ALL channels. Vocalcom's intuitive user interface increases productivity and allows companies to weave all of their customer interactions across all channels into continuous conversation threads. This allows them to reduce customer effort while strengthening customer relationships with each interaction. Amazingly simple, adaptable, and powered by AI Keep the conversation going. All customer interactions, including chat, email, text message, phone, and social media, are available in one place.
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    Unify OpenScape Reviews
    Communication has evolved in numerous ways, but when it truly matters, the most essential tool we rely on is our voice. Unify OpenScape Voice, part of the Unify OpenScape Enterprise suite, empowers your business to engage effectively—with colleagues, clients, and all stakeholders—delivering interactions that are immediate and full of depth. Whether utilized as an independent voice solution or integrated with other unified communication tools, Unify OpenScape Voice boasts carrier-grade reliability, robust security, and impressive scalability—supporting up to 100,000 users per node—along with versatile deployment options that can be on-premise or cloud-based. This solution ensures a seamless connection between voice and various functionalities such as mobility, video conferencing, chat, messaging, presence, and a unified number service. You can also incorporate voice capabilities into your existing business applications without the need to overhaul your current multi-vendor voice infrastructure, all achieved through a single, cohesive framework. Consequently, businesses can enhance their communication strategies while maintaining flexibility and reliability.
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    United Office Reviews
    Unified Office, Inc. stands out as a premier supplier of SDN-based Hybrid Cloud solutions, seamlessly integrating on-premise, private cloud, and public cloud technologies to offer managed Voice-over-IP and Unified Communications services tailored for Small and Medium-sized Businesses (SMBs). Our Total Connect Now℠ service architecture is meticulously engineered from the ground up to ensure exceptional quality of experience and high availability, utilizing cutting-edge extensible business VoIP communications technology alongside cloud-based infrastructure to boost productivity for SMB workforces. This innovative design stems from our team's extensive experience accumulated over decades in both the telecommunications service provider sector and the large enterprise data networking field. As a distinguished business VoIP provider, we have not only crafted protocols and developed scalable products but have also integrated, deployed, and supported carrier-grade equipment across many of the largest converged networks globally. Central to our mission are the principles of quality, reliability, innovation, and customer support, which guide our operations and commitment to excellence. We continuously strive to adapt to the evolving needs of our clients, ensuring they stay ahead in a competitive landscape.
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    Unified Office Reviews
    Unified Office, Inc., is a top Managed Services Provider for Business Class Communications Services to Small- and Medium-sized Businesses. Unified Office provides fully managed business VoIP services. It integrates a quality and support plan that begins with a prospect engagement and continues through a site survey, network assessment, and ongoing integration, testing, deployment, and support lifecycle. We monitor all end-to–end service assets (on-premise, private/public clouds, software, hardware, quality, availability) round the clock using specially developed diagnostic tools. It is our commitment to support our business customers and resellers that is most important. Large enterprises have been attracted to the Internet of Things (IoT), and have purchased them. Unified Office, a provider of huManaged VoIP services, has extended its one-year-old Internet of Things service.
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    Verge Network Solutions Reviews
    In the digital age, staying connected is more than just making a call. Verge's Business VoIP Phone Systems are feature-rich and offer the flexibility of On-Premises deployment or Verge Dedicated private Cloud. Our VoIP solutions are designed to meet your specific business needs and budget. They not only offer a lower cost of ownership, but also bring the rich features of modern phone systems to the heart of your operations. Verge's Unified Communication Solutions offer a robust suite of solutions designed to streamline collaboration while driving productivity. We enable your team to collaborate and connect from anywhere at any time by integrating voice, data, video and mobile applications onto a single, cohesive platform. Our tailored solutions will keep your business ahead of the competition, fostering innovation and increasing customer engagement.